Dynamo-electric machine



June l Y 1926. 1,587,324

J. C. .HUTTON DYNAMO ELECTRIC MACHINE Filed Jan. 22, 1926 f a l l S14/nemici: ,J7

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Patented June l, 1926.

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JAMES COCHRANE HUTTON, OF BRlJlNGI-IAM,4 ENGLND, ASSIGNOR TOTE-1E BRITISH LIGrEUlCIIN'Gr4 AND IGNITION CON'IPANY LMTEDV'OF `BPJM)ING-11AM, ENGLAND, A

BR'IISH COMPANY. l -1 nvneiuolnrincfrnrc MACHINE. l

Application filed January 22, 1926, Serial No. 82,897, and in Great Britain May 1G, 1924.

This invention relates to dynamo electric machines and has special reference to .lgnn tion magnetos ofthe type m VWhich the armature is fixed and there -is employed in" conjunction therewith a rota-ry unrvound permanent magnet orrotary unWound in` ductor's and stationary magnets.

- The object ofthe present invention is to provide improved means for obtaining automatic or hand adjustment of the timing position of magnetosof the kind above re ferred to. For this purpose according to the present invention the rotating magnet systern or inductors of the magneto and the high tension distributor drive mechanism I are mounted directly on a sleeve rotatably mounted on the driving shaft of the mag'- neto and the contact breaker or cam 1s mounted on the spindle of the high tension ldistributor or on the said sleeve whereby khand control or automatic control of the timing of the spark can be effected by relative angular displacement between the sleeve and the shaft. A The automatic adjustment of the relative positions of the sleeve and the driving shaft is preferably obtained by means of a centrifugally acting device connected with thesaid shaft or sleeve and driven directly from thedriving shaft. For eiilecting hand control of the timing of the spark the rotating magnet system or inductors of the magneto are mounted on a sleeve rotatably mounted on the driving `shaft of the magneto, and the ldrivingshaft is either made hollow and the required displacement is obtained by meansof va pin' operatingV through the hollow driving shaft, or there may be mounted on the driving shaft a slid-N able sleeve carrying a pin adapted toengage with a suitably arranged slot in a hub rotat-` Figure 1 illustrates a magneto provided wvith means for obtaining-automatic or Vhand operated control of the timing of the spark, Figure 2 is'a transverse section on the line 2-'2 of Figure 3, l

Fig. B is an enlarged sectional view of Aoperating parts ofr the automatic and hand spark adjustin@q mechanism, and

be described more fullyV Figure 4 is a detail view of a modified construction in Which the contact breaker or cam is mounted on the sleeve instead of on the spindle of the'high tension distributor as in Figure 1.

Referring to the drawings the rotatable magnet or inductors 2 ofthe magneto and the gear drive 5 to the high tension distribu tor 26 are mounted Ion a sleeve 11 which is rotatably mounted upon 'the driving shaft 11i supported in bearings 7. The contact' breaker or cam 6 is mounted on the spindle 25. of the high tension distributor 26 as shown in Figure 1 or on the sleeve 11 as shown in Figure 1l. The shaft 14 is made hollow so as to receive a shaft 17 which is movable longitudinally from the outside of the machine; the shaft 17 carries at one end a pin 18 which engages an obliquely cut slot .27 in the shaft 11i and with an oppositely cut slot 28 in the rotatable hub 19, so that movement of the pin 18 in an endvvise or axial .direction causes a -rotation of the hub 19.A The hub also carries lugs 2Oa to Which links 21 are fastened throughpins 2O at one end, the other ends of the links beingattached to Weights 22 which in turn are connected through links 23 to the rotor. 2 to Which the said links are pivoted by thefpins 24e. It will be vseen therefore that by an end- Wise movement of the shaft 17 angular displacement'of the vpin 24- is obtained and a further movement is obtained by radial displacement of the Weights 22 by centrifugal force, Whichitends to draw the pins 2O and 24E; closertogether. By the angular. movement of the sleeve 11 they may be effected either manually or automatically as above described on the occurrence of a variation in the speed "neto at all timing positions.

It is to be understood that the means hereinbefore described for obtaining the automatic or hand adjustment of the timing position of a magneto are of course also i applicable to'magnetos when arranged with a dynamo in a combined unit as described and claimed 1n thespecication of my copending applicationiSerial No. 81,319 filed- May 19, 1925 but that no claim is made in the present specification to a combined unit in which the magneto is provided with the improved means in question, such combined unit including a magneto provided with the said means for controlling the timing of the spark being claimed in my aforesaid specification Serial No. 31,319.

liilhat I claim and desire to secure by Letters Patent of the United States is 1. An ignition magneto of the kind referred to comprising a fined armature and a rotary permanent magnet system, a driving shaft for the rotary magnet system, bearings for si'ipportsaid driving shaft, a sleeve rotatably mounted on said driving shaft, said rotary magnet system being mounted directly on said sleeve, a high tension distributor drive mechanism mounted directly on said sleeve, a Contact breaker, means for actuating said contact breaker from said sleeve, said sleeve with the members aforementioned mounted thereon being located between the bearings of the driving shaft, anda centrifugally acting means com` prising a hub mounted on said shaft and weights connected through one set of links to the hub and through another set of links to the rotary magnet s ystem for effecting relative angular displacement between the hub and the shaft for controlling the timing of the spark.

2. An ignition magneto of the kind referred to comprising a fixed armature and a rotary permanent magnet system, a driving shaft for the rotary magnet system, bearings for supporting said driving shaft, a sleeve rotatably mounted on said driving shaft, said rotary magnet system being mounted directly on said sleeve, a high tension distributor. said high tension distributor being provided with a spindle, mechanism for driving said high tension distributor mounted directly on said sleeve, a contact breaker mounted on said spindle, said sleeve with the members aforementioned mounted thereon being located between the bearings of the driving shaft, and a centrifugally acting means comprising ay hub mounted on said shaft and weights connected through one set of links to the hub and through another set of links to the rotary magnet system for elfecting relative angular displacement between the sleeve and the shaft for controlling the timing of the spark.

3. An ignition magneto of the kind referred to comprising a lined armature and a rotary permanent magnet system, a. hollow driving shaft for the rotary magnet system, bearings for supporting` said driving shaft, a sleeve rotatablyY mounted on said driving shaft, said rotary magnet system being mounted directly on said sleeve, a high tension distributor drive mechanism mounted directly on said sleeve, a Contact breaker, means for actuating said contact breaker from said sleeve, said sleeve with the members aforementioned mounted thereon being located between the bearings of the driving shaft, a hub mounted on the driving shaft, av centrifugally acting device connected with the said hub and sleeve, and a solid shaft carrying a pin, said solid shaft being longitudinally movable within the hollow driving shaft, said hollow driving shaft being provided with an elongated slot cut at an angle to the axis and said hub being provided with an elongated slot cut at an angle to the axis opposite to that of the slot formed in the hollow driving shaft, and said pin carried by the solid shaft engaging with the slots in the driving shaft and hub so that axial movement of the solid shaft and the pin carried thereby imparts angular movement to the hub.

la An ignition magneto of the kind referred to comprising a iixed armature and a rotary pernianent magnet system, a hollow driving shaft for the rotary mag iet system, bearings for supporting said diiving shaft, a sleeve rotatably mounted. on said driving shaft, said rotary magnet system being mounted directly on said sleeve, a high tension distributor, said high tension distributor being provided with a spin die, mechanism for driving said high tension distributor mounted directly on said sleeve, a Contact breaker mounted on said spindle, said sleeve with the members aforementioned mounted thereon being located between the bearings of tl e driving shaft, a hub mounted on the driving shaft, a ceutrifugally acting device connected with the said hub and sleeve, and a solid shaft earrying a pin, said solid shaft being` longitudinally movable within the hollow driving shaft, said hollow driving shaft being provided with an elongated slot cut at an angle to the axis and said hub being provided with an elongated slot cut at an angle to tl e axis opposite to that of the slot formed in the hollow driving shaft, and said pin carried by the solid shaft engaging with the slots in the driving shaft and hub so that axial movement of the solid shaft and the pin carried thereby imparts angular movement to the hub.

5. An ignition magneto of the kind referred to comprising a fixed armature and a rotary permanent magnet system, a hollow driving shaft for the rotary magnet system, bearings for supporting said driving shaft, a sleeve rotatably mounted on said driving shaft, said rotary magnet system being mounted directly on said sleeve, a high tension distributor drive mechanism mounted directly 0n said sleeve, a contact breaker, means for actuating said Contact breaker from said sleeve, said sleeve with the members aforementioned mounted therelill) on being located between the bearings of the drive sha-ft, a centrifugally acting means comprising a hub mounted on said shaft and weights connected through one set of links to the hub and through another set of links to the rotary magnet system, and a solid shaft carrying a pin, said solid shaft being longitudinally movable within the hollow driving shaft, said hollow driving shaft being provided with an elongated slot cut at an angle to the axis and said hub being provided with an elongated slot cut at an angle to the axis opposite to that of the slot formed in the hollow driving shaft, and said pin carried by the solid shaft engaging with the slots in the driving shaft and hub so that axial movement of the solid shaft and the pin carried thereby imparts angular movement to the hub.

6. An ignition magneto of the kind referred to comprising a fixed armature and a rotary iiux distributor, a driving shaft for the rotary flux distributor, bearings for supporting said driving shaft, a sleeve rotatably mounted on said driving shaft, said rotary flux distributor being mounted directly on said sleeve, a high tension distributor drive mechanism mounted directly on said sleeve, a contact breaker, means for actuating said contact breaker from said sleeve, said sleeve with the members aforementioned mounted thereon being located between the bearings of the driving shaft, a hub mounted on the driving shaft, and means comprising a centrifugally acting device connected with the said hub and sleeve for effecting relative `angular displacement between the sleeve and the shaft for controlling the timing of the spark.

'i'. An ignition magneto of the kind referred to comprising a fixed armature and a rotary flux distributor, a driving shaft for the rotary flux distributor, bearings for supporting said driving shaft, a sleeve rotatably mounted on said driving shaft, said rotary flux distributor being mounted directly on said sleeve, a high tension distributor drive mechanism mounted directly on said sleeve, a contact breaker, means for actuating said contact breaker from said sleeve, said sleeve with the member aforementioned mounted thereon being located between the bearings of the driving shaft, and a centrifugally acting means compris ing a hub mounted on said shaft and weights connected through one set of links to the hub and through another set of links to the rotary flux distributor for effecting relative angular displacement between the hub and the shaft for controlling the timing of the spark.

8. An ignition magneto of the kind referred to comprising a fixed armature and a rotary flux distributor, a hollow driving shaft for the rotary flux distributor, bearings for supporting said driving shaft, a sleeve rotatably mounted on said driving shaft, said rotary flux distributor being mounted directly on said sleeve, a high tension distributor drive mechanism mounted directly on said sleeve, a contact breaker, means for actuating said contact breaker from said sleeve, said sleeve with the members aforementioned mounted thereon being located between the bearings of the driving shaft, a hub mountedon the driving shaft, a centrifugally acting device connected with the said hub and sleeve, and a solid shaft carrying a pin, said solid shaft being longitudinally movable within the hollow driving shaft, said hollow driving shaft being provided with an elongated slot cut at an angle to the axis and said hub being provided with an elongated slot cut at an angle to the axis opposite to that of the slot formed in the hollow driving shaft, and said pin carried by the solid shaft engaging with the slots in the driving shaft and hub so that axial movement of the solid shaft and the pin carried thereby imparts angular movement to the hub.

JAMES COCHRANE HUTTON. 

